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Airguns, AirSoft and MilSim Air rifles and pistols, AirSoft and Mil Sim Discussion

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  #1  
Old 05-16-2017, 6:40 AM
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Default Gamo pellet gun help. Makes noise, lost power.

I have a Gamo shadow air rifle, and it's lost power. The cocking motion seems normal but the pellet falls short. I've searched YouTube looking for maintenance actions but haven't had any luck. Is there a seal lubrication procedure or some way to bring it back? Any help is appreciated.
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Old 05-16-2017, 8:05 AM
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Your piston seal has died.
The cocking force is the same because the spring is still OK.
Get a new piston seal and O-rings here:
http://www.gamousa.com/family.aspx?familyID=47

If you are in the L.A. area, and want help putting the seal in, PM me after you get the parts.
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Old 05-17-2017, 9:56 AM
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X2 on what Ojisan said. How old is the gun? Get some chamber oil and put it down the TP port and leave it upright for a day or 2. It may just be dried out. You might get lucky and it just needs some oil. If you shot it excessively after realizing something is up, you may have damaged the seal and need a new one.
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Old 05-19-2017, 11:44 AM
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Thanks for the info guys. I'll be returning into town in a few days and will give the oil a try. It's about five years old. Where exactly is the TP port, and what type of chamber oil should I use. I have a garage full of different oils so I should be able to find something suitable.
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Old 05-19-2017, 9:00 PM
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TP transfer port or exhaust port. When you crack open the springer and you see the hole where the air would come from. You can't use any oil as it can cause dentonation upon firing your rifle. You can get RWS chamber oil at your local Big5
http://m.big5sportinggoods.com/mobil...11/_/A-3756152
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Old 05-19-2017, 9:30 PM
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Mac 1 airguns in Gardena works on a lot of pellet guns

Cool that the member above offer to teach you how to swap the parts
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Old 06-10-2017, 8:39 AM
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Silicone oil only in the air chamber, if you can't find RWS chamber oil at Big 5 or Wally world, you can use silicone shock oil for R/C cars at the hobby shop, thin viscosity is best, Traxxas or Associated brand.
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